The Channel Tunnel (or “Chunnel” as it’s often called) is a 23-mile underwater crossing of the English Channel. The trains go underground here, with the train loading terminal just to the west. There’s also a large horse etched into the hill alongside. The French side of the tunnel at Calais is not in high-resolution but you can still make out the trainlines. The thumbnail shot is of one of the boring machines used to dig the tunnel, apparently there’s a big “FOR SALE, ONE CAREFUL OWNER” sign alongside it. Thanks: Michael Davis, Richard Peat, Mr.Tea, Winchester, David Patrick,…